Screw-Locking Key-Locking Insert
Thin Wall, Cadmium Plated Steel, 1/4"-28 Thread, Drill Size x
Threaded Insert Type | Key Locking |
Key-Locking Insert Wall Type | Thin |
Profile | Standard |
Lubricant Type | Dry Film |
Material | Cadmium-Plated Steel |
Thread Size | 1/4"-28 |
For Tap Thread Size | 7/16"-14 |
Installed Length | 0.375" |
Drill Bit Size | X |
For Maximum Hole Diameter | 0.397" |
Number of Locking Keys | 2 |
Military Specification | MS51831A202L, NAS1395-4L |
Certificate Form | Digital |
Certificate Type | Material Certificate with Traceable Lot Number |
Comparable To | Keensert |
End Type | Open |
External Locking Type | Key |
For Minimum Material Thickness | 3/8" |
For Tap Type | Standard (UN) |
For Use In | Aluminum, Bronze, Copper, Soft Metal |
Internal Locking Type | Distorted Thread |
Performance | Screw Locking, Seize Resistant |
Tensile Strength | Not Rated |
Thread Direction | Right Hand |
Thread Fit | Unified Standard Class 3B |
Thread Spacing | Fine |
Thread Type | UNF |
Threaded Insert Securing Type | External Thread |
Country of Origin | United States |
DFARS Compliance | Specialty Metals Compliant (252.225-7009) |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (01/21/2025, 247 SVHC) Compliant |
RoHS Compliance | Not Compliant |
Schedule B Number | 731819.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | Yes |
Create the tightest hold in aluminum and other soft metal without screws sticking. The lubricant on these inserts eases installation, and the irregularly shaped threads won’t let screws back out from vibration. Inserts have keys that drive into material to prevent them from slipping or rotating in the hole.
To install, drill and tap a hole in your material. Then, thread the insert onto the installation tool and screw it into the hole. Place the tool over the keys and hit it with a hammer to drive them in.
Thin Wall—Use these inserts near the edge of workpieces or wherever you only have space for a small hole. They're also lighter than standard and extra-thick wall inserts for applications with strict weight limitations.
Dry-Film-Lubricated Cadmium-Plated Steel—The plating creates a barrier against rust.
The information in this 3-D model is provided for reference only.